摘要
研究椭球变换后高斯投影的算法问题,目前较常用的椭球变换方法有3种:椭球膨胀法、椭球平移法和椭球变形法。结合实际推导出3种方法的逆向计算数学模型,并利用Visual Basic 6.0开发了椭球变换高斯投影Ellipsoid Transform V2010程序,建立与国家坐标系有严密转换关系的区域坐标系。实例验证:正向、逆向椭球变换后高斯投影的算法正确可靠。
At present there are three kinds of methods of ellipsoid transform in common use,they are ellipsoid expanding model,ellipsoid shift model,and ellipsoid distortion model.Based on actual situation,this paper deduces three types of backward computational math models.Besides,with the use of Visual Basic 6.0 the software,Ellipsoid Transform V2010 has been developed,with which the exactness of Gauss-Kruger projection calculation after the forward and backward transform can be tested through example.
出处
《地矿测绘》
2011年第4期11-14,共4页
Surveying and Mapping of Geology and Mineral Resources
关键词
椭球膨胀法
椭球平移法
椭球变形法
数学模型
ellipsoid expanding model
ellipsoid shift model
ellipsoid distortion model
mathematical model
